655056501651 has 16 divisors (see below), whose sum is σ = 970480107520. Its totient is φ = 436692620520.

The previous prime is 655056501623. The next prime is 655056501661. The reversal of 655056501651 is 156105650556.

It is not a de Polignac number, because 655056501651 - 2⁶ = 655056501587 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 655056501597 and 655056501606.

It is not an unprimeable number, because it can be changed into a prime (655056501661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 766446 + ... + 1377516.

It is an arithmetic number, because the mean of its divisors is an integer number (60655006720).

Almost surely, 2^655056501651 is an apocalyptic number.

655056501651 is a deficient number, since it is larger than the sum of its proper divisors (315423605869).

655056501651 is a wasteful number, since it uses less digits than its factorization.

655056501651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650783 (or 650777 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 45.

The spelling of 655056501651 in words is "six hundred fifty-five billion, fifty-six million, five hundred one thousand, six hundred fifty-one".